If you have a single simple task then I would consider Azure Automation rather than Elastic Database Jobs.
The need for it to be S0 and empty initially means that you'd have to create the Agent Database and then migrate your current database into that database. Unless you are using schemas in your own database (not "dbo") then this could get messy
and more difficult to secure correctly.
Azure Automation is probably a simpler route in your case.
Martin Cairney SQL Server MVP